JP2010229708A - Connection structure between connection unit body of wall and beam - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a building of multilayer structure having excellent earthquake resistance by connecting a connection unit body forming a wall and a wooden beam to secure the strength and rigidity of the connected portion. <P>SOLUTION: A plurality of an elongated rectangular frames 1 are disposed at the wall of a building, and a connection unit body 3 formed by connecting the corners of the frames 1 through long steel angles 2 is disposed on the upper and lower sides of a wooden beam 7 extending horizontally. A steel connecting bracket 8 having flanged portions 82 which are formed on the upper and lower sides of the plate-like portion 81 is affixed to both sides of the beam 7. The four corners of the flanged portion 82 are affixed to the steel angles 2 of the upper and lower connection unit bodies 3, respectively. The height H of the plate-like portion 81 is equal to that of the beam 7. The load of the upper connection unit body 3 is substantially transmitted to the lower connection unit body 3 through the steel connection bracket 8, and does not act on the wooden beam 7, thereby the strength and rigidity of the connected portion are very high. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a connecting structure for connecting a connecting unit body constituting a wall portion of a building such as a house and a beam, and in particular, a connecting unit body assembled by connecting a plurality of aligned frames and the like. The present invention relates to a coupling structure when the beams are stacked one above the other.

  Buildings such as houses are required to improve the safety, such as seismic resistance, fire resistance or crime prevention, as well as to improve the habitability. Recently, strengthening of earthquake resistance is also required from the legal aspect. . In addition, due to demands for speeding up construction work or reducing costs, unit housings that are constructed by assembling and building multiple housing units such as floor panel members and wall panel members that are pre-formed at factories and the like are widely used. is doing. Even in such unit houses, the demand for improvement in earthquake resistance tends to increase.

Under such circumstances, the present applicant has developed a wall structure using a connecting unit body having a very large seismic strength, and a construction method for a unit house provided with the wall structure. This wall structure disclosed in Japanese Patent Application Laid-Open No. 2008-57124 is a long connecting member in which a plurality of frame bodies 1 made of a vertically long rectangular frame structure are aligned as shown in FIG. For example, a connecting unit body 3 is provided in which the frame bodies 1 are mutually connected and integrated so that the steel angle member 2 having an L-shaped cross section is fitted into the four corners of the frame body 1. As shown in FIG. 5 (b), the frame body 1 includes two wood assemblies 1A and 1B each having both sides and upper and lower sides made of a small-diameter material, and a sheet steel material 1C having an L shape at a corner. In this case, they are superposed and combined. However, as the material of the frame 1, reinforced concrete, reinforced plastic, or the like can be used.
The connecting unit body 3 is installed on a wall portion of a building such as a house, and a wall panel 4 (2) having functions such as fire prevention and heat insulation is provided outside the frame body 1 corresponding to the outside of the building. A dotted line) and a brace 5 (one-dot chain line) of a reinforcing bar are attached. Such a connecting unit body 3 is manufactured in advance in a factory or the like, and a building is constructed by appropriately combining at a construction site.

  The connecting unit body 3 is a box-type structure in which a plurality of frame bodies 1 are connected by a steel angle member 2 and can receive various external forces acting on the building in a distributed manner. Is very big. In particular, since the connecting unit body 3 has dimensions corresponding to the upper and lower sides of the frame body 1 in a direction perpendicular to the surface of the wall panel 5, this wall structure is subject to vibration in a direction perpendicular to the wall surface caused by an earthquake. However, it has sufficient rigidity to hold the housing unit firmly. The space between the frame bodies 1 can be used as a storage space for furniture or the like, and can form a storage space that is deep and easy to use.

  When constructing a unit house, as shown in the cross-sectional plan view of FIG. 6, a plurality of connecting unit bodies 3 are continuously arranged on opposite side surfaces of the living space S, and walls are formed on both sides of the unit house. When the space 6 between the frame bodies 1 of the connection unit body 3 is used as a storage space, a shelf, a door, and the like are provided in the space 6 as necessary. Moreover, as shown in the front sectional view of FIG. 6, a two-story unit house can be constructed by arranging the connecting unit bodies 3 so as to overlap each other via the beam 7. At this time, the connecting unit body 3 on the first floor supports the beam 7 that becomes the floor portion on the second floor, and functions as a strength member that supports the entire unit house.

  When the connecting unit bodies 3 are arranged one above the other so as to construct a multi-layered unit house, it is necessary to connect the connecting unit body 3 and the beam 7 placed in the horizontal direction. By the way, timber is often used in general houses, and in order to connect wooden pillars and beams, it is usual to process uneven parts called `` mortises '' and `` mortises '' in the connection part and fit them. Combine and join. In order to increase the strength of the coupling portion, it is also well known to use a metallic coupling member or a reinforcing member. For example, Japanese Patent Application Laid-Open No. 2004-92148 discloses a metal screw member screwed into a beam and a column. There is disclosed a coupling method for fastening a fixing metal fitting fixed to a bolt with a bolt. Japanese Utility Model Laid-Open No. 63-89005 discloses a connection in which a substrate portion having a U-shaped cross-section covering three sides of a column and a support plate fixed to the upper and lower surfaces of the beam are integrated. A coupling method for connecting a wooden column and a beam using a metal fitting is disclosed.

JP 2008-57124 A JP 2004-92148 A Japanese Utility Model Publication No. 63-89005

  As described above, when constructing a multi-layered structure, for example, a unit house, in which the connecting unit bodies are stacked one above the other, a beam is arranged between the connecting unit bodies, and the connecting unit body and the beam are connected to each other. Join. At this time, a large vertical load acts on the end portion of the beam placed at the lower portion of the connection unit body (A portion in the cross section of the front view of FIG. 6) due to the weight of the upper connection unit body and the like. In particular, when no columns are installed in the living space in order to improve the comfortability, the connecting unit bodies constituting the walls on both sides basically support all the upper weight, so the vertical load at the end of the beam is also low. It will be even bigger. If the beam is made of wood, wood with a large width must be used so that the compressive stress generated at the end of the beam does not become excessive.

Further, not only a load in the vertical direction but also a multi-directional load and a moment are applied to the connection portion between the connecting unit body and the beam due to, for example, a roll due to an earthquake or a strong wind. Since the surface of the wood beam is relatively soft, the connection portion with the connecting unit body is easily damaged by these loads. In order to construct a joint portion having high strength and rigidity, it is required to use wood having a large size from this aspect as well.
The present invention secures the strength and rigidity of the connecting portion between the connecting unit body and the beam when constructing a united multi-layered structure using the connecting unit body and the wooden beam constituting the wall. The problem is to construct an excellent building such as earthquake resistance.

In view of the above-described problems, the present invention secures a joint fitting made of a metal material having the same height as the beam to both side surfaces of the end portion of the beam, and attaches the joint fitting to the metal of the connecting unit body arranged vertically. It connects with the connection member which consists of material. That is, the present invention
“A connecting structure that connects a plurality of connecting unit bodies arranged in the vertical direction on the wall of a building and beams made of wood,
The connecting unit body is formed by aligning a plurality of rectangular plate-like bodies whose vertical length is longer than the horizontal length at intervals, and each corner of the plurality of plate-like bodies is made of a metal material. It is formed by connecting with a long connecting member,
The beam is placed between the connecting unit bodies arranged above and below, and extends in a horizontal direction at a right angle to the elongated connecting member,
On both side surfaces of the end portion of the beam, a joint fitting made of a metal material having a rectangular plate-like portion and a flange-like portion extending perpendicularly to one of the upper and lower sides thereof is fixed. The part has the same vertical length as the beam,
The plate-like portion of the joint fitting is fixed to the side surface of the beam, and both end portions in the horizontal direction of the upper and lower flange-like portions are respectively connected to the long connection members of the connecting unit bodies arranged vertically. It's stuck. ''
It has a combined structure characterized by this.

  As described in claim 2, the plate-like body of the connecting unit body is a rectangular frame body (a plate-like body having a space portion in the center) having both sides and upper and lower sides. In addition, the long connecting member is an angle member of an L-shaped steel material whose cross section is fitted into each corner of the frame body, and the horizontally extending piece of the L-shaped cross section is the joint fitting. It is preferable to be fixed to the upper and lower flange portions.

  According to a third aspect of the present invention, a projection having a sharp tip is formed on the plate-like portion of the joint fitting, and the projection is bitten into the beam, thereby fixing the joint fitting to the side surface of the beam. be able to.

  According to a fourth aspect of the present invention, it is preferable that the beams coupled to the connection unit body are respectively placed at positions where plate-like bodies of the connection unit body are arranged.

The present invention relates to a connecting structure of a connecting unit body and a wooden beam, and the connecting unit body has a structure in which a rectangular plate having a long vertical direction is connected by a long connecting member made of a metal material. I have. And in this invention, the joining metal fixture which consists of metal materials adheres to the both sides | surfaces of the edge part of the wooden beam pinched | interposed into a connection unit body. The joint bracket is a U-shaped bracket having a plate-shaped portion and a flange-shaped portion extending horizontally on one side of the upper and lower sides thereof, and fixes the plate-shaped portion to the side surface of the beam. The upper and lower flange-like portions at the four corners are respectively fixed to long connecting members made of a metal material of a connecting unit body arranged vertically.
As described above, in the coupling structure of the present invention, the long connecting member made of the metal material of the connecting unit body arranged above and below is joined via the joining metal fitting made of the metal material fixed to both side surfaces of the beam. The Here, since the plate-like portion of the joint fitting is set to the same vertical length (height) as the beam, the vertical load from the upper connecting unit body is substantially the joining of the metal material. It is transmitted to the lower connecting unit body by the metal fitting. The wood beams are hardly subjected to compressive stress based on the vertical load, and the need to use wood with a large width is eliminated. Similar to the connection unit body, the metal fitting can be fixed to both side surfaces of the beam in advance at a factory or the like with high dimensional accuracy.

  Further, in the present invention, it is not necessary to process the uneven portions for joining into a wood beam, and the four corners of the joint member made of a metal material are also fastened to the long connection member of the metal material with, for example, bolts. Then, the connecting unit body and the beam are coupled. Since the metal material is a material that is remarkably larger in strength and rigidity than wood, such as steel, for example, when the metal materials are fixed to each other, the strength of the joint portion is very large. In the present invention, since the four places apart from the top, bottom, left and right of the metal fitting are fixed to the four connecting members, respectively, the multi-directional load or moment load acting on the connecting portion between the connecting unit body and the beam is counteracted. Thus, it is possible to maintain a strong bond.

  In the invention of claim 2, the plate-like body of the connecting unit body is a rectangular frame body having both sides and upper and lower sides, and as a long connection member, a plurality of frame bodies The present invention is applied to a connecting unit body using an angle material of a steel material having an L-shaped cross section fitted in each corner. If the plate-like body is a frame body, a high-strength plate-like body can be constituted by small-diameter wood, and the center space portion can be used as a piping space. Further, the connecting member is an angle member having an L-shaped cross section, and the joining work can be simplified by fixing the horizontally extending piece of the L-shaped cross section and the upper and lower flange-shaped portions of the joint fitting. it can.

  The invention according to claim 3 is to fix the joint fitting to the side surface of the beam by forming a projection with a sharp tip at the plate-like portion of the joint fitting and biting the projection into the wooden beam. . In the present invention, since the vertical load of the connecting unit body does not act on the wooden beam, it is not necessary to firmly fix the joining bracket and the beam. Even with the fixing method of the invention of claim 3, the strength is sufficient, and according to this method, the fixing operation becomes simple.

  As in the invention of claim 4, when the beam to be coupled with the connecting unit body is placed at the position where the frame body is disposed, the frame body and the beam are linearly aligned in the vertical direction. Only the vertical load of the connecting unit body acts on the joint fittings fixed to both sides of the joint unit. Therefore, it is possible to efficiently support the load of the connecting unit body.

It is a perspective view which shows the frame to which the joint structure of this invention is applied. It is a front view of the coupling structure of the present invention. FIG. 3 is a cross-sectional view taken along the line AA in FIG. 2. It is a perspective view which shows the joining metal fitting of this invention. It is a perspective view etc. which show the connection unit body in the coupling structure of this invention. It is a figure which shows the housing unit using the connection unit body of FIG.

  The coupling structure of the present invention will be described below with reference to the drawings. FIG. 1 shows a frame structure combining a connecting unit body and a beam made of wood arranged on a wall portion of a building to which the present invention is applied, and a building frame in which the frame body is stacked in multiple layers. It is a perspective view. 2 is a front view showing a coupling structure of a connecting unit body and a beam according to the present invention, FIG. 3 is a cross-sectional view taken along the line AA of FIG. 2, and FIG. It has become. In these drawings, components corresponding to those in FIGS. 5 and 6 are denoted by the same reference numerals.

  As shown in FIG. 1, a building to which the present invention is applied is a structure in which a frame structure having a connecting unit body 3 and a beam 7 is stacked in multiple layers, and this is used as a skeleton. The connecting unit body 3 has the same configuration as that of the connecting unit body of FIG. 5, and a plurality of frames 1 made of a vertically long rectangular frame structure are aligned to form an L-shaped cross section which is a long connecting member. The steel angle member 2 is fitted into the four corners of the frame body 1 to be connected and integrated. As in the case shown in FIG. 5 (b), the frame 1 is formed by superimposing frame bodies made of wood on both sides and upper and lower sides with a reinforcing member made of a thin steel plate sandwiched between bolts 1D (FIG. 2 and FIG. 3)). In this embodiment, a timber frame is used as the plate-like body. For example, a reinforced concrete plate having no space in the center may be used, and a steel angle is used as a long connecting member. A steel material having a hollow rectangular cross section may be used instead of the material.

  Two connecting unit bodies 3 are arranged on both sides so as to constitute a wall portion of the building, and a beam 7 made of wood extending in the horizontal direction is placed therebetween. The beam 7 has a vertically long rectangular cross section, and is placed on the upper part of the frame 1 of the connecting unit body 3. In this embodiment, the beams 7 are placed on the upper portions of all the frames 1, but every other portion can be installed as long as it is a portion where the load acting from above is not large. Depending on the size of the building, a plurality of frame structures composed of the connecting unit bodies 3 and the beams 7 are used in combination in the vertical direction or the horizontal direction.

The connecting structure of the present invention shown in FIGS. 2 to 4 is used for a connecting portion between the connecting unit body 3 and the beam 7, particularly a connecting portion at a position where the frame body is stacked in multiple layers (A portion in FIG. 1). .
In this connection structure, as shown in the perspective view of FIG. 4A, first, the joining metal fitting 8 is fixed to both side surfaces of the end portion of the beam 7. The joint metal fitting 8 is a steel metal fitting having a U-shaped cross section provided with a rectangular plate-like portion 81 and a flange-like portion 82 extending perpendicularly to one of the upper and lower sides thereof, and the rectangular plate-like portion 81 is a wood screw. 9 (see also FIG. 2 and FIG. 3) is fixed to the side surface of the beam 7. The vertical length (height) H of the plate-like portion 81 is set to be the same as the height dimension of the beam 7, and the horizontal length L is substantially equal to the horizontal length of the frame body 1. (See FIG. 2). Thereby, the edge part of the both sides of the beam 7 which consists of wood will be covered by the horizontal direction length of the frame 1 with the plate-shaped part 81 of the joining fitting 8 of steel materials. The joint fitting 8 is previously attached to the beam 7 in the factory.

  As shown in FIGS. 2 and 3, the upper and lower flange-shaped portions 82 of the joint fitting 8 are respectively bolted to the steel angle members 2 of the connecting unit body 3 arranged at the upper and lower sides at both ends in the horizontal direction. 10 is fastened. In other words, the flange-shaped portion 82 of the joint fitting 8 is fixed to the four steel angle members 2 with the bolts 10 at four positions overlapping the horizontally extending pieces 21 of the upper and lower steel angle members 2. The timber beam 7 is not directly coupled to the connecting unit body 3 but is coupled to a space formed by the steel fitting 8 and the steel angle member 2 so as to be fitted.

By the way, the wood beam 7 supports the floor portion of the upper living space, and when the column is omitted so as to improve the freedom of use of the living space, the load on the upper living space is all The lower connecting unit 3 is supported. This load is transmitted downward through the frame body 1 of the connecting unit body 3, but in the coupling structure of the present invention, the beam 7 placed in a linear position with the frame body 1 (see FIG. 3). The joint fitting 8 is fixed to both sides thereof. Since the plate-like portion 81 of the joint fitting 8 is set to the same vertical length as the beam 7, the vertical load from the upper connection unit body 3 is substantially connected to the lower part by the joint fitting 8. It is transmitted to the unit body 3. Since the wood beam 7 is hardly subjected to compressive stress based on the vertical load, it is not necessary to use wood with a large width for the beam, and the width is small so as to efficiently support the bending moment due to the load in the living space. Vertically long wood can be used.
Note that the vertical length of the plate-like portion 81 in the joint fitting 8 does not have to be exactly the same as that of the beam 7, and a slight difference is allowed as long as the effects described here are obtained. Is natural.

  Further, in the present invention, the connecting unit body 3 and the beam 7 are joined by fastening the four corners of the steel fitting 8 to the steel angle member 2 which is also a steel member with the bolt 10. Since steel is a material having higher strength and rigidity than wood, the strength of the joint portion is very high. As shown in FIG. 2, since the joint fitting 8 is fixed at four positions apart from the top, bottom, left, and right, a multidirectional load or moment load (for example, the moment indicated by the arrow M in the drawing) is applied to the connecting unit body 3 due to an earthquake or the like. Even when a load is applied, it is possible to maintain a strong bond against this. Therefore, in the multi-layered building in which the connecting unit bodies 3 arranged so as to overlap the wall portion are joined by the joint structure of the present invention with the beam 7 interposed therebetween, the outer shell portion of the building has a structure with high strength and rigidity, and is earthquake resistant. It will be much better.

Here, the modification of the joining metal fitting shown in FIG.4 (b) is demonstrated.
On the plate-like portion 81 of the joint member 8 of the modified example, a protrusion 83 having a sharp tip is formed on the surface in contact with the wooden beam by a method of raising the plate-like portion 81 or the like. When the joining fitting 8 is strongly pressed against the beam, the projection 83 bites into the wooden beam, and the joining fitting 8 can be fixed to the side surface of the beam. As described above, since the wood beam is not directly coupled to the coupling unit body, there is no problem in strength even when coupling with such a simple joint fitting. Further, in the joint fitting 8 according to the modified example, a through hole 84 is provided in the center of the plate-like portion 81, and the material of the portion that does not contribute much to the transmission of the vertical load is cut to reduce the weight. It is natural that such a through hole 84 can be provided in the joint fitting shown in FIG.

  As described above in detail, the present invention provides a joint fitting made of a metal material having the same height as a beam when a building having a multilayer structure is constructed using a connecting unit body and a beam of wood. It adheres to the both side surfaces of the edge part of a beam, and this joining metal fitting is couple | bonded with the connection member which consists of a metal material of the connection unit body arrange | positioned up and down. In the above embodiment, the case where a unitized multi-layered building is a house has been described. However, it goes without saying that the building to which the present invention is applied is not limited to a house. Further, in the above embodiment, steel is used as the metal material for the joint metal fitting, but it is clear that various modifications can be made to the above embodiment, such as using another metal material having high strength. It is.

1 Frame (plate-shaped body)
2 connecting member 3 connecting unit body 4 wall panel 7 beam 8 joint fitting 81 plate-like part 82 flange-like part

Claims (4)

A connecting structure for connecting a plurality of connecting unit bodies arranged in the vertical direction on a wall portion of a building and a beam made of wood,
The connecting unit body is formed by aligning a plurality of rectangular plate-like bodies whose vertical length is longer than the horizontal length at intervals, and each corner of the plurality of plate-like bodies is made of a metal material. It is formed by connecting with a long connecting member,
The beam is placed between the connecting unit bodies arranged above and below, and extends in a horizontal direction at a right angle to the elongated connecting member,
On both side surfaces of the end portion of the beam, a joint fitting made of a metal material having a rectangular plate-like portion and a flange-like portion extending perpendicularly to one of the upper and lower sides thereof is fixed. The part has the same vertical length as the beam,
The plate-like portion of the joint fitting is fixed to the side surface of the beam, and both end portions in the horizontal direction of the upper and lower flange-like portions are respectively connected to the long connection members of the connecting unit bodies arranged vertically. Bonding structure characterized by being fixed. The cross-section in which the plate-like body of the connecting unit body is a rectangular frame body having both sides and upper and lower sides, and the long connection member is fitted into each corner of the frame body 2 is an L-shaped steel angle member, and the horizontally extending pieces of the L-shaped cross section are fixed to the upper and lower flange-shaped portions of the joint fitting. The plate-like portion of the joint fitting is formed with a protrusion having a sharp tip, and the joint is fixed to a side surface of the beam by biting the protrusion into the beam. Bonding structure described in 1. 4. The coupling structure according to claim 1, wherein the beam coupled to the coupling unit body is placed at a position where a plate-like body of the coupling unit body is disposed. 5.

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